<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Insert title here</title>
</head>
<body>
<form action="check_login.php" method="post">
    用户名:<input type="text" name="username" />
    <br />
    密码:<input type="password" name="password" />
    <br />
    <input type="submit" name="submit" value="登陆" />

    <a href="123.html">注册</a>
</form>
</body>
</html>